GABELLI & Co INVESTMENT ADVISERS, INC. - TESARO INC ownership

TESARO INC's ticker is TSRO and the CUSIP is 881569107. A total of 265 filers reported holding TESARO INC in Q1 2017. The put-call ratio across all filers is 0.59 and the average weighting 0.7%.

Quarter-by-quarter ownership
GABELLI & Co INVESTMENT ADVISERS, INC. ownership history of TESARO INC
ValueSharesWeighting
Q4 2018$19,238,000
+4535.7%
259,100
+9496.3%
2.72%
+5683.0%
Q1 2017$415,0002,7000.05%
Other shareholders
TESARO INC shareholders Q1 2017
NameSharesValueWeighting ↓
INTERWEST VENTURE MANAGEMENT CO 2,021,738$89,907,00037.98%
NEA Management Company, LLC 10,420,555$463,402,00021.71%
ORACLE INVESTMENT MANAGEMENT INC 763,535$33,954,0008.21%
Camber Capital Management LP 2,500,000$111,175,0004.28%
BB BIOTECH AG 2,426,802$107,920,0003.12%
NEXTHERA CAPITAL LP 433,500$19,278,0002.98%
Cormorant Asset Management, LP 550,000$24,459,0001.81%
Opus Point Partners Management, LLC 11,500$511,0001.11%
Rock Springs Capital Management LP 625,400$27,812,0001.07%
Eversept Partners, LP 52,523$2,335,6981.07%
View complete list of TESARO INC shareholders